LTC2637IDE-LMI10#PBF

Overview

The LTC2637IDE-LMI10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 2.5V. The device operates on a single supply voltage ranging from 2.7V to 5.5V and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes double-buffered data latches and a power-on reset circuit configured to reset outputs to mid-scale in internal reference mode. The component is housed in a 16-lead MSOP package and is guaranteed monotonic over the industrial temperature range of –40°C to 85°C.

Feature Summary

• Octal architecture with eight independent 10-bit DAC channels
• Integrated 10ppm/°C precision reference yielding 2.5V full-scale output
• Rail-to-rail output buffers with ultralow crosstalk (<3nV•s)
• I2C interface with selectable slave addresses via CA0, CA1, and CA2 pins

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking devices

Procurement Notes

Verify the specific ordering suffix LMI10#PBF against the manufacturer's current product selection guide to confirm the mid-scale power-on reset configuration and tape-and-reel packaging status. Ensure the procurement documentation matches the industrial temperature grade (–40°C to 85°C) and the 16-lead MSOP physical package dimensions for proper PCB footprint compatibility.

Selection Notes

Select this part when eight isolated voltage outputs are required with low power consumption and high accuracy. The 10-bit resolution offers a balance between cost and performance compared to 8-bit or 12-bit variants. Verify that the system supply voltage falls within the 2.7V to 5.5V range compatible with the 'L' grade internal reference. Confirm that the I2C bus speed requirements align with the supported 100kHz or 400kHz clock rates.

Part Context

This component belongs to the LTC2637 family, which also includes 12-bit and 8-bit resolutions. Variants differ by full-scale voltage ('L' for 2.5V, 'H' for 4.096V), package type (DFN or MSOP), and power-on reset behavior. The 'IDE' designation indicates the Industrial temperature grade and MSOP package, while 'LMI10' specifies the 2.5V reference, mid-scale reset, and 10-bit resolution.

Replacement Considerations

Direct substitutes within the same family include LTC2637IDE-LZ10#PBF (zero-scale reset) or LTC2637IDE-HMI10#PBF (4.096V full-scale). Cross-family replacements like the LTC2635 offer quad-channel configurations but require verification of pinout and interface compatibility.